Application tool for balancing weight application machine and method of application thereof

ABSTRACT

A wheel-balancing weights application tool for applying wheel-balancing weights to a central portion of a wheel is hereby presented, the wheel-balancing weights application tool comprising a pair of opposed semi-circular weights holder capable of simultaneously carrying two sets of wheel-balancing weights to a wheel for sequentially securing the two sets of wheel-balancing weights to the central portion of the wheel.

CROSS-REFERENCE

The present application claims priority from and is a continuationapplication of U.S. patent application Ser. No. 15/056,445, filed Feb.29, 2016, entitled BALANCING WEIGHT APPLICATION MACHINE AND METHOD OFUSE THEREOF, this document is enclosed herewith by reference in itsentirety.

FIELD OF THE INVENTION

This invention relates to an apparatus for providing and installingwheel-balancing weights. More precisely, the present invention relatesto an apparatus for analyzing a wheel configuration and managing theprocurement, installation of wheel-balancing weights at specificlocations on the wheel and a method of using same.

BACKGROUND OF THE INVENTION

Wheel-balancing weights (or wheel weights, wheel balance weights . . . )are commonly used on wheeled vehicles to improve the static and dynamicbalancing of the wheel assembly. To balance the wheels, each wheel isrotated with a balancing weight application apparatus that analyses anddetects uneven weight distribution thereof that could generatesignificant vibrations when the wheels rotate at various rotatingspeeds. This undesirable wheel vibration would be transmitted to theentire vehicle, if not corrected. Corrective wheel-balancing weights,when required, are secured on the circumference of the wheel on both theinterior and the exterior sides of the wheel. The addition of requiredwheel-balancing weights corrects the polar weight distribution of thewheel assembly and balances the wheel that rotates without inducingundesirable vibrations.

The demand for wheels that are adapted to the design of vehicles isgrowing. Wheels aesthetic is therefore a growing concern for thevehicles manufacturers. Wheel-balancing weights that are not visiblefrom the exterior of the vehicle are preferably used to improve the lookof the wheels. This hidden type of wheel-balancing weights is glued onthe interior surface of the wheels in contrast with visiblewheel-balancing weights commonly secured with a clip to the exterioredges of the wheels.

Therefore, there exists a need in the art for an improved apparatus fordetecting wheel and tire configurations, providing and installingwheel-balancing weights on the wheel. A system for analyzing wheelconfigurations, managing the required number of wheel-balancing weightsand installing the wheel-balancing weights on wheels is also in demand.There is also a need in the art for an autonomous apparatus that wouldminimize human interventions for balancing wheels. And there is a needfor an improved fit between a polymer-covered wheel-balancing weight anda method of manufacturing same over the existing art.

SUMMARY OF THE INVENTION

It is one aspect of the present invention to alleviate one or more ofthe drawbacks of the background art by addressing one or more of theexisting needs in the art.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, an integrated wheel-balancing weightsapplication system.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus withautomatic detection of wheel characteristics for properly installingbalancing weights on a wheel.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus forinstalling balancing weights on a wheel without requiring a data base ofwheels' configuration to apply weights to a predetermined location onwheels.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a wheel-balancing weights application systemdesigned to receive a strip of wheel-balancing weights and feed thestrip to dispense a desired amount of weights for installation on awheel.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a wheel-balancing weights application systemadapted to provide weights on a basis of corrective wheel-balancingweights data provided by another system.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a modular wheel-balancing weights applicationsystem; the modules may include a supplying module, a feeding module, adispensing module, an application module and a conveying module.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a wheel-balancing weights application systemcapable of balancing different types of wheels without reprogramming thewheel-balancing weights application system.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a wheel-balancing weights application systemthat can manage different weight colors (e.g. grey, black . . . ),weight finishes (e.g. mate, egg shell) and/or weight plating (e.g.chrome, zinc . . . ) for wheels of different colors, finishes andplating.

An aspect of the present invention provides, in accordance with at leastone embodiment thereof, a wheel-balancing weights application systemwith a plurality of dispensing module for recharging strips of weightswithout stopping the providing process.

An object of the present invention provides, in accordance with at leastone embodiment thereof, an exchangeable spool-supporting pallet adaptedto be operatively positioned for feeding the strip of weights todispense a desired mass of weights for balancing a wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a spool-receiver adapted to operatively interactwith a plurality of weights-supporting spools for selectively unwind thespool.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a spool-receiver including a plurality ofaxially stackable strip-receiving spools; the spools being adapted toprovide a plurality of different weight configurations.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a weights strip thickness configured to sensethe remaining quantity of strip on a strip-receiving spool.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a strip-receiving spool identification mechanism; the spoolidentification mechanism may include RFID spool recognition, bar coderecognition and identification number for compatibility with theapparatus and traceability of the weights.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a loop of strip of weights after the strip-receiving spool fordamping strip-feeding speed fluctuations and absorbing lateralmisalignment between the strip-receiving spool and the strip feeder.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding an automatic transversal weights strip alignment mechanism.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a feeding mechanism using a toothed drive wheelincluding a shape engaging a profile of the weights.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a loop of strip of weights after the feeding module fordamping strip-feeding speed fluctuations between the feeder module andthe dispensing module.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding automatic initialization, threading and feeding of new weightsstrips.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a robot for applying a desired quantity of weights to a wheel.Alternatively, a mechanical arm can be used for applying the desiredquantity of weights to the wheel in order to avoid extensive acquisitioncost of a robot.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a robot to pull and push on a strip of weights, the robotbeing configured to pull and push on the strip of weights of apredetermined length.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a robot to pull and push on a strip of weights to engage aprotective tape liner to remove the protective tape liner prior toinstallation of the weights on a wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a servomotor driving a weights-engaging toothedmember to pull and push on a strip of weights and provide apredetermined length of strip for application to a wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatusincluding a servomotor to selectively pull or push a strip of weights toengage a protective tape liner with a liner peeler mechanism to removethe protective tape liner prior to installation of the weights on awheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a supporting member supporting weights thereonand allowing a tool to take the weights thereon and move the weights toa wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a dispensing module including guiding railsmaintaining a strip of weights in a desired position when the strip ofweights is cut in a desired length.

An object of the present invention provides, in accordance with at leastone embodiment thereof, an automatic weights strip junction presencesensing capability.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a protection liner peeler mechanism.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a protection liner channeling and cutting tool.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a protection liner sensing mechanism configuredto enable an action when a protection liner is sensed after the peelingmechanism.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a strip cutting tool including a ratchet action.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot with a tool including a plurality ofweights holder; the weights holders being positioned in oppositedirections and optionally offset in respect with each other.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot for securing weights on a wheel withouttouching the wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a tool for moving weights to a wheel usingmagnetic force to temporarily secure the weights to the tool.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a tool for securing weights to a wheel using atrailing end thereof to begin a sequential sticking of a desired lengthof a strip of weights on a wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a tool for securing weights receiving theweights on the trailing side of the tool.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot for securing weights on a wheel that isusing triangulation sensing of the wheel to locate a tool of the roboton the wheel and determine weight application locations in accordancewith the wheel profiling.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot with a weight-securing tool usable tocut a portion of the strip of weights with a pivotal motion in respectwith a longitudinal direction of the strip.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot with a weight-securing tool capable ofsecuring weights on both sides of the wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a robot control using torque sensing (i.e. servofloat) capability to use a predetermined force, pressure, when securingthe weights on the wheel.

An object of the present invention provides, in accordance with at leastone embodiment thereof, conveyor for moving a wheel in aweight-installation position.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a conveyor including a calibration reference.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus that isadapted to secure strips of weights on a wheel that does not need to beat a determined position on the conveyor.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus that isidentifying a profile of a wheel by sensing with a sensor thecharacteristics of the wheel when the wheel is moving on the conveyor.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus that isidentifying relevant characteristics of a wheel and tire assembly foreach wheel to be balanced without recourse to a database of wheels'characteristics.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus that isautomatically identifying a wheel size, a wheel center position, a wheelcolor and weight(s) localization mark(s) on a tire of the wheel,identification number, wheel model number, wheel diameter, wheel offsetand other markings with a camera sensor.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a balancing weight application apparatus that isusing a colored camera flash.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a sensor (e.g. laser sensor, 3D image capture,distance sensor, laser grid deformation sensing, line scanner) foracquiring a wheel profile.

An object of the present invention provides, in accordance with at leastone embodiment thereof, a conveyor including a wheel presence sensordisposed at an angle to sense a wheel location on the conveyor withoutinterfering with a tire's threads.

An object of the invention provides, in accordance with at least oneembodiment thereof, a wheel-balancing weight application apparatuscomprising a supplying module including a first strip of wheel-balancingweights and a second strip of wheel-balancing weights, the first and thesecond strips of wheel-balancing weights including a differentwheel-balancing weights characteristic; a control module operativelyconnected to sensors of the wheel-balancing weight application apparatusfor identifying characteristics of a wheel; an application module forsecuring a selected portion of strip of wheel-balancing weights to thewheel, a wheel-balancing weights selection from the first strip ofwheel-balancing weights and the second strip of wheel-balancing weightsbeing made on a basis of the identified characteristic of the wheel.

An object of the invention provides, in accordance with at least oneembodiment thereof, a method of installing strips of wheel-balancingweights, the method comprising selectively supplying a first strip ofwheel-balancing weights portion and a second strip of wheel-balancingweights portion, the first and the second strips of wheel-balancingweights including a different wheel-balancing weights characteristic;sensing a wheel; identifying characteristics of the sensed wheel;selecting wheel-balancing weights from the first strip ofwheel-balancing weights and the second strip of wheel-balancing weightson a basis of the identified characteristics of the wheel; and securinga portion of the selected strip of wheel-balancing weights to the wheel.

Other objects and further scope of applicability of the presentinvention will become apparent from the detailed description givenhereinafter. However, it should be understood that the detaileddescription and specific examples, while indicating preferredembodiments of the invention, are given by way of illustration only,since various changes and modifications within the spirit and scope ofthe invention will become apparent to those skilled in the art from thisdetailed description.

Additional and/or alternative advantages and salient features of theinvention will become apparent from the following detailed description,which, taken in conjunction with the annexed drawings, disclosepreferred embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Referring now to the drawings which form a part of this originaldisclosure:

FIG. 1 is a side elevation view of a balancing weight applicationapparatus in accordance with at least one embodiment of the invention;

FIG. 2(A)(i) is a side elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 2(A)(ii) is a front elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 2(A)(iii) is a side elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 2(B)(i) is a side elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 2(B)(ii) is a front elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 2(B)(iii) is a side elevation view of a supplying module inaccordance with at least one embodiment of the invention;

FIG. 3(A) is a side elevation view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 3(B) is an isometric view of a supplying module in accordance withat least one embodiment of the invention;

FIG. 3(C) is a side elevation view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 3(D) is a front elevation view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 4(A) is an isometric view of a spool in accordance with at leastone embodiment of the invention;

FIG. 4(B) is an isometric view of a spool in accordance with at leastone embodiment of the invention;

FIG. 5(A) is an isometric view of a portion of a balancing weights stripin accordance with at least one embodiment of the invention;

FIG. 5(B) is an isometric view of a portion of a balancing weights stripin accordance with at least one embodiment of the invention;

FIG. 6(A) is a front isometric view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 6(B) is a side elevation view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 6(C) is a front elevation view of a supplying module in accordancewith at least one embodiment of the invention;

FIG. 6(D) is an isometric view of a supplying module in accordance withat least one embodiment of the invention;

FIG. 7(A) is a top plan view of a double feeding module and supplyingmodule in accordance with at least one embodiment of the invention;

FIG. 7(B) is a top plan view of a double feeding module and supplyingmodule in accordance with at least one embodiment of the invention;

FIG. 8(A) is a side elevation view of a double feeding module andsupplying module in accordance with at least one embodiment of theinvention;

FIG. 8(B) is a side elevation view of a double feeding module andsupplying module in accordance with at least one embodiment of theinvention;

FIG. 9(A) is a side elevation view of a spool in accordance with atleast one embodiment of the invention;

FIG. 9 (B) is a top plan view of a spool in accordance with at least oneembodiment of the invention;

FIG. 9(C) is a front elevation view of a spool in accordance with atleast one embodiment of the invention;

FIG. 9(D) is an isometric view of a spool in accordance with at leastone embodiment of the invention;

FIG. 10(A) is a side elevation view of a spool in accordance with atleast one embodiment of the invention;

FIG. 10(B) is a front elevation view of a spool in accordance with atleast one embodiment of the invention;

FIG. 10(C) is an isometric view of a spool in accordance with at leastone embodiment of the invention;

FIG. 10(D) is a partial side elevation view of a spool in accordancewith at least one embodiment of the invention;

FIG. 11(A) is a side elevation view of a feeding module and supplyingmodule in accordance with at least one embodiment of the invention;

FIG. 11(B) is a top plan view of a feeding module and supplying modulein accordance with at least one embodiment of the invention;

FIG. 12 is a top plan view of a feeding module and supplying module inaccordance with at least one embodiment of the invention;

FIG. 13 is a top plan view of a feeding module and supplying module inaccordance with at least one embodiment of the invention;

FIG. 14(A) is an isometric view of a feeding module in accordance withat least one embodiment of the invention;

FIG. 14(B) is a partial isometric view of a feeding module in accordancewith at least one embodiment of the invention;

FIG. 14(C) is a partial isometric view of a feeding module in accordancewith at least one embodiment of the invention;

FIG. 15(A) is a front elevation view of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 15(B) is a side elevation view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 15(C) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 16(A) is a side elevation section view of a portion of a dispensingmodule in accordance with at least one embodiment of the invention;

FIG. 16(B) is an isometric view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 16(C) is a front elevation view of a portion of a dispensing modulein accordance with at least one embodiment of the invention;

FIG. 17(A) is a side elevation section view of a portion of a dispensingmodule in accordance with at least one embodiment of the invention;

FIG. 17(B) is a side elevation section view of a portion of a dispensingmodule in accordance with at least one embodiment of the invention;

FIG. 17(C) is an isometric view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 17(D) is a partial side elevation section view of a portion of adispensing module in accordance with at least one embodiment of theinvention;

FIG. 17(E) is a partial side elevation section view of a portion of adispensing module in accordance with at least one embodiment of theinvention;

FIG. 18(A) is a side elevation view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 18(B) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 18(C) is a partial isometric view of a portion of a dispensingmodule in accordance with at least one embodiment of the invention;

FIG. 19(A) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 19(B) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 20(A) is an isometric view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 20(B) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 21(A) is a side elevation section view of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 21(B) is a side elevation section view of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 22(A) is a side elevation view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 22(B) is a side elevation view of a portion of a dispensing modulein accordance with at least one embodiment of the invention;

FIG. 22(C) is an isometric view of a dispensing module in accordancewith at least one embodiment of the invention;

FIG. 22(D) is an isometric view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 23(A) is a front elevation view of a portion of a dispensingmodule, more precisely a cutting mechanism, in accordance with at leastone embodiment of the invention;

FIG. 23(B) is a front elevation view of a portion of a dispensingmodule, more precisely a cutting mechanism, in accordance with at leastone embodiment of the invention;

FIG. 23(C) is a side elevation view of a portion of a dispensing module,more precisely a cutting mechanism, in accordance with at least oneembodiment of the invention;

FIG. 23(D) is an isometric view of a portion of a dispensing module,more precisely a cutting mechanism, in accordance with at least oneembodiment of the invention;

FIG. 24 is an exploded isometric view of a portion of a dispensingmodule, more precisely a cutting mechanism, in accordance with at leastone embodiment of the invention;

FIG. 25(A) is a side elevation view of a portion of a dispensing modulein accordance with at least one embodiment of the invention;

FIG. 25(B) is a front elevation view of a portion of a dispensing modulein accordance with at least one embodiment of the invention;

FIG. 25(C) is a side elevation view of a portion of a dispensing modulein accordance with at least one embodiment of the invention;

FIG. 26 is a side elevation view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 27 is a side elevation view of a portion of a dispensing module inaccordance with at least one embodiment of the invention;

FIG. 28(A) is a side elevation view of a portion of a balancing weightapplication apparatus in accordance with at least one embodiment of theinvention;

FIG. 28(B) is a front elevation view of a portion of a balancing weightapplication apparatus in accordance with at least one embodiment of theinvention;

FIG. 29(A) is an elevation view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 29(B) is a top plan view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 29(C) is front elevation view of a portion of an application modulein accordance with at least one embodiment of the invention;

FIG. 29(D) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 29(E) is a front elevation view of a portion of an applicationmodule in accordance with at least one embodiment of the invention;

FIG. 29(F) is a side elevation section view of a portion of anapplication module in accordance with at least one embodiment of theinvention;

FIG. 30(A)(i) is a top plan view illustrating movements of anapplication module, more precisely the robot tool, in accordance with atleast one embodiment of the invention;

FIG. 30(A)(ii) is a side elevation view illustrating a portion of anapplication module;

FIG. 30(B)(i) is a top plan view illustrating a portion of anapplication module;

FIG. 30(B)(ii) is a side elevation view illustrating a portion of anapplication module;

FIG. 30(C)(i) is a top plan view illustrating a portion of anapplication module;

FIG. 30(C)(ii) is a side elevation view illustrating a portion of anapplication module;

FIG. 31(A) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 31(B) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 31(C) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 31(D) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 32(A) is an isometric view of a portion of an application module inaccordance with at least one embodiment of the invention;

FIG. 32(B) is a side elevation section view of a portion of anapplication module in relation with a wheel in accordance with at leastone embodiment of the invention;

FIG. 32(C) is a top plan view of a portion of an application module inrelation with a wheel in accordance with at least one embodiment of theinvention;

FIG. 33(A) is a side elevation section view of a portion of anapplication module in relation with a wheel in accordance with at leastone embodiment of the invention;

FIG. 33(B) is a top plan view of a portion of an application module inrelation with a wheel in accordance with at least one embodiment of theinvention;

FIG. 34 (A) is a front elevation view of a conveying module inaccordance with at least one embodiment of the invention;

FIG. 34(B) is a side elevation view of a conveying module in accordancewith at least one embodiment of the invention;

FIG. 34(C) is a front elevation view of a conveying module in accordancewith at least one embodiment of the invention;

FIG. 35 is a side elevation view of a conveying module in accordancewith at least one embodiment of the invention;

FIG. 36(A) is a schematic side elevation view of a portion of aconveying module in accordance with at least one embodiment of theinvention;

FIG. 36(B) is an isometric view of a portion of a conveying module inaccordance with at least one embodiment of the invention;

FIG. 36(C) is an isometric view of a portion of a conveying module inaccordance with at least one embodiment of the invention;

FIG. 36(D) is an isometric view of a portion of a conveying module inaccordance with at least one embodiment of the invention;

FIG. 36(E) is an isometric view of a portion of a conveying module inaccordance with at least one embodiment of the invention;

FIG. 37 is a bloc diagram of a computer apparatus in accordance with atleast one embodiment of the invention;

FIG. 38 is a bloc diagram of a computerized system with modules andsensors in accordance with at least one embodiment of the invention;

FIG. 39 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 40 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 41 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 42 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 43 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 44 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 45 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 46 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 47 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention;

FIG. 48 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention; and

FIG. 49 is a flow chart of steps of a process in accordance with atleast one embodiment of the invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Embodiments of the present invention are described bellow with referenceto the appended Figures. An exemplary balancing weight applicationapparatus 10 is illustrated in FIG. 1. The balancing weight applicationapparatus 10 is designed to manage the procurement of a specific mass ofwheel-balancing weights 70 that come in strips 74 to be secured to awheel and balance the wheel. The illustrated embodiment of the balancingweight application apparatus 10 is separated in a plurality of exemplarymodules for ease of understanding. The first module is a supplyingmodule 20 followed by a feeding module 30, a dispensing module 40, anapplication module 50 and a conveying/transport module 60.

The embodiments illustrated in the Figures and described in thespecification are describing a balancing weight application apparatus 10with a possible configuration of a supplying module 20 followed by afeeding module 30, a dispensing module 40 an application module 50 and aconveying module 60. However, a balancing weight application apparatus10 can include a plurality of supplying modules 20, feeding modules 30and dispensing modules 40 to provide redundancy and prevents stoppingthe wheel-balancing weights assembly line for maintenance or rechargingpurposes. Redundancy can also be used to provide weights 70 of differentcolors, shapes, finishes or of different masses without departing fromthe scope of the present application.

The supplying module 20 provides a continuous strip 74 of weights 70 tothe balancing weight application apparatus 10. The strip 74 is generallya juxtaposed series of weights 70 secured to each other with a tape 76to continuously supply a desired number of weights 70 to the balancingweight application apparatus 10. Each weight 70, generally made of aheavy material like steel, lead or tungsten, is generally distinct fromthe other adjacent weights 70 hence allowing some movement therebetween.The exemplified proportions, length, height and width of a weight 70 arestandardized for ease of packaging and management predictability.However, the balancing weight application apparatus 10 can manageweights 70 of different proportions that can be better adapted forparticular applications. The strip 74 allows long productivity cycleswithout having to refill the supplying module 20 with an additionalstrip 74 of weights 70. Other alternate weights-supplying configurationsthat could be used with the balancing weight application apparatus 10and remain within the scope of the present application despite theillustrated embodiments are limited to some possible configurations forillustrative purposes.

The supplying module 20 generally uses a strip 74 of weights 70 that iswinded on a spool 78 for compact shipment and easy manipulation. Eachspool 78 of weights 70 can be operatively installed in the balancingweight application apparatus 10 in a manner suitable to provide weights70 to the feeding module 30. The spool 78 of weights 70 can be securedin a spool support 82 to further facilitate shipment and manipulationthereof. The spool support 82 can support the spool 78 and allowcontrolled unwinding of the strip 74. In that configuration, the spoolsupport 82 is equipped with bearing portions (illustrated in FIG. 4) torotate the spool 78 and unwind the strip 74 to provide weights 70 to thebalancing weight application apparatus 10. The spool support 82 can besized and designed to be movable with a fork lift in an embodimentthereof.

A different embodiment of the spool support 82 is illustrated in FIG. 2.The spool support 82 can cooperate with a spool actuator 86 operativelyconnected to the spool support 82, or to the spool 78 housed in thespool support 82, to actuate and control the unwinding of the strip 74stored in the spool 78 when feeding the balancing weight applicationapparatus 10. The spool actuator 86 is preferably disposed along thespool axle 118 to operatively connect the spool 78 in a compactarrangement. Under certain circumstances, the spool actuator 86 canreduce rotation speed or wind the spool 78 when, for example, too muchslack is found in the strip 74 of weights 70. FIG. 2(A) illustrates afirst configuration where a portion of the spool 78 is not operativelyconnected to the spool actuator 86. Conversely, FIG. 2(B) illustrate asecond configuration where the spool support 82 is operatively connectedto the spool actuator 86. More details about the engagement between thespool actuator 86 and the spool support 82 is going to be providedbelow.

The embodied spool support 82 includes a frame 90 with a lower portion94 adapted to contact the floor and an upper portion 98 generallyconfigured to secure and protect the spool 78 in addition to allowrotational movements of the spool 78. The lower portion 94 optionallyincludes a fork receiver 102 sized and designed to cooperate with a forklift for efficient transportation. The upper portion 98 generallyextends vertically on each lateral side of the spool 78 to maintain thespool 78 in a vertical position. Optional anchors 106 are provided on anupper portion 98 of the spool support 82 for further securing andlifting possibilities. The anchors 106 can also be configured to alignspool supports 82 when staking them. As best seen in FIG. 1, spoolsupport members 110 are located about a height corresponding to a radiusof the spool 82 to locate bearing elements 114 rotatably supporting aspool axle 118 for rotating the spool 82 in respect with the spoolsupport 82 about the spool axle 118. A locking mechanism 122 is providedto lock the rotation of the spool 78 in respect with the spool support82 to prevent any unwinding of the spool 78. The locking mechanism 122is embodies as a spring-loaded stem for illustrative purposes.

A spool actuation portion 126 is connected to the spool 78 and is usedin collaboration with the spool actuator 86 for rotating the spool 78.The spool actuation portion 126 is embodied in the Figures as a circularmember 130 on a side of the spool support 82 that gets in contact withthe spool actuator 86 when the spool support 82 is located in anoperating position in respect with the spool actuator 86 as it isillustrated in FIG. 2(B). In the illustrated embodiment, the spoolactuation portion 126 is laterally located in respect with the spoolsupport 82 and axially aligned with the spool axle 118.

The spool actuator 86 is located in proper position in respect with thefeeding module 30 such that the strip 74 be properly aligned with thefeeding module 30 for operation. In the present embodiment, the spoolactuator 86 is disposed on a lateral side of the spool support 82 and ispreferably secured to the ground to remain at the desired location toproperly engage with the spool actuation portion 126 of the spoolsupport 82. Indeed, the spool actuator 86 includes a mechanism forrotatably actuating the spool 78 in the spool support 82. The spoolactuator 86 could be used to actuate directly a spool 78 in anembodiment where the spool 78 can be directly actuated without a spoolsupport 82. Another embodiment could directly feed the strip 74 ofweights 70 to the balancing weight application apparatus 10 however thisis less desirable given the reduced unwinding control of the strip 74.

The mechanism for actuating the spool 134 is embodied in the presentsituation as a pair of rollers 138 adapted to selectively engage thecircular member 130 of the spool support 82. The pair of rollers 138 ismade of a material sufficiently strong to sustain the mechanical loadapplied thereon and offer sufficient friction to rotate the spool 134.For example, a metallic wheel covered with rubber would be an acceptablechoice. A drive portion 138 illustratively including a motor 142 (i.e.servo, AC, DC motor, variable frequency drive . . . ) operativelyconnected to a ratio-altering gearbox 146 and transmission elements 150are used to rotatably drive the spool 78 to feed the strip 74 of weights70 in the balancing weight application apparatus 10. A tensioner 154applies pressure on a chain 158 (or a belt) between the gearbox 146 andthe rollers 138. The motor 142, that can be electric, hydraulic orotherwise driven, is managed electronically to rotate the spool 78 andprovide weights 70 at a desired rate.

A lifting mechanism 162 is used to change the height of the rollers 138to selectively engage the spool actuation portion 126, in a liftedposition 166 illustrated in FIG. 3(A), and to disengage the spoolactuation portion 126, in a lowered position 170 illustrated in FIG.3(B). Contact between the rollers 138 and the spool actuation portion126 has to be sufficient to transmit rotational movement withoutslipping and does not necessarily require to lift the side of the spool78. The present embodiment proposes a pivotal motion 174 of a mainmember 178 of a spool actuator frame 182 about a pivot 184 between thelifted position 166 and the lowered position 170. An actuator 188 isoperatively secured between a distal end 186 of the main member 178 anda fixed portion 190 of the spool actuator frame 182. Sensor A detectsthe remaining quantity of strip 74 in a spool 78 with, for instance,detecting a presence of strip 74 through the axially proximal opening214. Other configuration of parts could alternatively lead to suchdetermination without departing from the scope of the description.

Different configurations of spools 78 are encompassed by the presentapplication. A single spool 78 can be used in the supplying module 20. Aplurality of spools 78 can alternatively be used in the supplying module20. Some possible embodiments are discussed in greater details belowwithout disclaimer of other non-illustrated embodiments. For example,spools 78 including a strip 74 of weights 70 of about 9 kg (about 20pounds) can be used for easy replacement. Spools 78 including a strip 74of weights 70 of about 90 kg (about 200 pounds) can be used for longcontinuous operation and spools 78 including a strip 74 of weights 70 ofabout 225 kg (about 500 pounds) can be used for extended operation.Alternatively, large spools 78 can accommodate a strip 74 of weights 70of up to 900 kg (about 2000 pounds) can be used for extended operatingperiods. Referring now to FIG. 4, illustrating a plurality of adjacentspools 78, one can appreciate that thin spools 78 can be used incombination. A thin spool 78 has a width of a weight 70 and hence housesa strip 74 where weights 70 are superposed on top of each other witheach turn of the spool 78. The embodiment shown in FIG. 4 has eight (8)adjacent spools 78 separated with a spool wall 194 therebetween. Inother words, it could equally be described as a single spool 78 with aplurality of strip-receiving slots 198 separated by slot-separatingwalls 202. A plurality of adjacent spools 78 can provide weights 70 ofdifferent masses and/or different colors to match the color of the wheelto balance. For instance, black weights 70 can be use to correct thebalance of black wheels and grey weights 70 can be use to correct thebalance of grey wheels to reduce the visual impact of the weights 70applied on the wheel 748.

Lateral slot-separating walls 206 include reinforcing ribs 210. Anaxially proximal opening 214 is used to secure a first end of a strip 74in the strip-receiving slot 198 to hold in place an end of the strip 74and begin winding the strip 74 on the spool 78. Axially distal openings218 are disposed on the periphery of the slot-separating walls 202 (oron the lateral walls of a single spool 78) to lock a second end of thestrip 74 on the spool 78 to prevent undesired unwinding of the strip 74when the spool 78 is full. A securing clip 222 illustrated in FIG. 5 canbe used as an example of a workable locking mechanism that can beinstalled on the spool 78 via the axially distal openings 218 to preventundesired unwinding of the strip 74. The securing clip 222 has a bottomportion 226 slipped under a previous layer of strip 74.1 joined with atop portion 230, that is optionally shaped with the profile of a weight70, to hold the superposed layer of strip 74.2 to the previous layer ofstrip 74.1 hence preventing undesirable unwinding of the strip 74 fromthe spool 78. A handle 234 is provided on the clip 222 for easy removalof the securing clip 222.

Each spool 78 can be associated with a unique identification. EmbeddedRFID in each spool 78, bar code on the spool 78, unique identificationnumber, or other identification means can be used for identifying eachspool 78 and the products thereon. This allows of product acceptance andcompliance with the apparatus 10 requirements. Compliance of spools 78can be made automatically or require an associated key code to bereceived by the apparatus 10. The spool is uniquely identified and thenumber of weights 70 thereon is known thus allowing traceability of theweights 70. For example, spool #2016A200 includes 200 kilograms ofweights 70, each weights 70 having 100 grams with known size, width,length and thickness. In the present illustrative example, it is knowntwo thousand (2000) weights 70 are housed on the spool 70. Each wheel748 is also uniquely identified on the installation line. For instance,weights #242 to #249 of spool #2016A200 are known to be installed onwheel #762898. Additionally, the application pressure used by the robot636 to secure the weights 70 on the wheel 748 is also known and recordedfor complete product traceability. The application pressure of specificweights 70 on a particular wheel 748 can be identified should theweights 70 later reveal not to be secured strongly enough to the wheel748 and pressure adjustment can be made.

FIG. 6 illustrates an embodiment of a spools manager assembly 240. Theexemplified spool manager assembly 240 includes a frame 244 forming astructure adapted to house one of a plurality of spools 78 in a spoolsreceptacle 242. The exemplified spools manager assembly 240 is includinga spool-supporting axle 248 adapted to receive thereon and support aplurality of individual spools 78. Each spool 78 in the illustratedconfiguration is containing, for example, a strip 74 of weights 70 ofabout 9 kg (about 20 pounds) each. As mentioned above, each individualspool 78 can accommodate weights 70 of different configurations, sizes,finishes, colors or masses to provide a plurality of different weights70. The spools manager assembly 240 of the illustrated embodimentincludes a spool-supporting shaft 248 secured to the frame 244, incantilever in the illustrated embodiment, thus allowing axial insertionand removal of spools 78. The illustrated spools manager assembly 240can accommodate ten (10) spools 78 although a different number of spools78 could be used. The spools 78 stored in the spools receptacle 242 arerotatably restricted about the spool axle 118 by one or a plurality ofspool angular locating members 250 axially projecting from the sideholding the spool-supporting axle 248. The spool angular locatingmembers 250 are engaging openings 274 in each spool 78 to preventundesired rotation of the spools 78. Indeed, the spools 78 could have atendency to unwind given the significant mass of the strip 74 of weights70 enclosed therein. The openings 274 pattern is designed such that thespools 78 are all located in a single possible angular position toensure the end of the strip 74 is going to be located at the sameposition for each of the spools 78. The spool angular locating members250 have preferably an axial length similar to the length of thespool-supporting shaft 248 to axially push all the spools 78 on thespool-supporting shaft 248.

The spool manager assembly 240 further includes a push member 254adapted to axially move to axially push the spools 78 out of thespool-supporting shaft 248. Axial movement of the push member 254 in theillustrated configuration is actuated by a servo motor 256 (otheralternative means for knowing the angular and/or linear position of thepush member 254 are contemplated in the present application) operativelyconnected to the push member 254 with a pair of pulleys 260 and a belt264 tensed with an optional tensioner 268. The servo motor 256 canselectively move the push member 254 in both axial directions and isconfigured to move by increments of one or more spool 78 thickness. Theembodied mechanism axially moves the push member 254 without rotating itabout the spool-supporting shaft 248.

The spools receptacle 242 of the spools manager assembly 240 is used incooperation with a spool unwinder 270. The spool unwinder 270 receives aspool 78 from the spools receptacle 242, as it can be appreciated inFIG. 7, when in the spool loading position 232. The spool unwinder 270then moves to a feeding position 234 and moves to an unloading position236 when the spool 78 is empty of strip 74 to unload the empty spool 78can simply fall in an empty spool receptacle (not illustrated). The pushmember 254 is used in cooperation with the spool unwinder 270 to push aspool 78 toward the spool unwinder 270 that is axially securing thespool hence mounted thereon for feeding the strip 74 of weights 70 inthe balancing weight application apparatus 10. The spool 78 to be unwindand fed to the balancing weight application apparatus 10 is axiallylocated at the feeding position 234 and the spool unwinder 270 rotatesto let fall the end of the strip 74 on a strip receiver 392, installedin a strip-reception position 394, to route the strip 74 toward theirinstallation on wheels. One can appreciate the spool unwinder 270 isrotatably actuated by a servo motor 256 in both directions at a desiredspeed to engage the strip 74 of weights 70 in the apparatus 10.

The supplying module 20 illustrated in FIG. 7 and FIG. 8 is embodiedwith a plurality of spools manager assemblies 240.1 and 240.2. Thisprovides a choice of weights 70 having different characteristics to befed in the apparatus 10. For instance, a first spools manager assembly240.1 could provide grey colored weights 70 to match grey colored orgreyish wheels 748 and alternatively provide with the second spoolsmanager assembly 240.2 weights 70 having different characteristic, likeblack colored weights 70 to match black or dark wheels 748 as identifiedby the sensors listed below. Referring to FIG. 7, the spools managerassembly 240.1 and its counterpart spool unwinder 270.1 are in theloading position 232 where a spool 78 is mounted on the unwinder 270.1.As best seen in FIG. 7(B), the spool unwinder 270.1 is slightly movedaway from the spools manager assembly 240.1 toward the feeding positionillustrated with the position of the lower unwinder 270.2. Axialmovements of the unwinders 270 are generated by a motor (not shown inthe Figures) managed accordingly.

The spools manager assemblies 240 are independently slidably mounted onguide rails 266 and actuated by actuators 262 to be displaced in aspools-loading configuration 258 as depicted in FIG. 8 b). It ispossible in the spools-loading configuration 258 to add new spools 78containing strips of weights 70 in the spool manager assembly 240because the spool manager assembly 240 is not axially covered by itscorresponding unwinder 270. The installation of new spools 78 can beautomated or be made manually by an operator. It is noted the rails 266are illustrated without supporting structures for the benefit of thereader but are secured to a frame or walls to ensure proper mechanicalstrength in real life operation. The spool unwinder 270 can be used withor without the feeding module 30. The spool unwinder 270 would replacethe feeding module 30 and unwinds the strip 74 of weights 70 at adesired rate and the strip would be pulled by an engaging toothed drivewheel 412 located downstream.

The spools 78 used in the previous embodiment are adapted to house asingle strip 78 of weights 70 superposed at each turn on the spool 78. Amandrel 272, illustrated with an empty spool 78 in FIG. 9 andillustrated with a spool 78 full of strip 74 therein in FIG. 10, is usedbetween the spool 78 and the spool-supporting shaft 248 to prevent freerotation of the spool 78 about the spool-supporting shaft 248. Themandrel 272 is installed on the spool-supporting shaft 248 with amechanism preventing rotation of the mandrel 272 in respect with thespool-supporting shaft 248 with, for instance, a key lock in thespool-supporting shaft 248 or engaging the holes 276 of the spool 78.

Another possible embodiment of the supplying module 20 is illustrated inFIG. 11. A wide spool-management module 280 with an associated feedingmodule 30 is represented in FIG. 11. The wide spool-management module280 includes a frame 284 forming a structure supporting a wide spool 290adapted to receive thereon a single wide spool 290 containing, forexample, a strip 74 of weights 70 of about 225 kg (about 500 pounds) forextended period of operation without having to recharge or replace thespool 290. The wide spool 290, in the exemplified embodiment, isdirectly supported by a set of supporting wheels 294 contacting thelateral edges 298 of the wide spool 290. Two of the supporting wheels298 are free to rotate 302 and the other two supporting wheels 298 areactuated supporting wheels 306 actuated by a motor 310 that isoperatively connected to the actuated supporting wheels 306 via a pairof pulleys 314 and a belt 318. The wide spool 284 is secured in placewith a tensioner 322 that is also optionally an encoder 326 adapted toprovide a signal representing the rotation of the wide spool 294.

The feeding module 30 can be separated or connected with the supplyingmodule 20 without departing from the scope of the invention. The feedingmodule 30 is associated with the supplying module 20 in the presentembodiment because, inter alia, the wide spool 290 has a long-windedstrip 74 thereon that is winded over the entire axial width of the widespool 290. This causes a lateral offset 330 of the strip 74 about thecenter line 334 of the wide spool 290 when unwinding or winding thestrip 74. The lateral offset of the strip 74 is causing a challengingtwist in the juxtaposed suite of solid weights 70 that can cause weights70 to disconnect from the strip 74 or break the strip 74. One way toreduce this effect is to manage a first loop 378 reducing the stress inthe strip 74 and/or aligning the feeding module 30 with the axialposition of the strip 74 on the spool 290. The feeding module 30illustrated in FIGS. 11-14 includes a carriage 338 configured to bealigned with the axial position of the strip 74 on the wide spool 290.The feeding module 30 includes a lateral actuator 342 actuating athreaded rod 346 to move the carriage 338 on rails 350. The carriage 338is equipped with an intake pulley 354 receiving the strip 74 of weights70 from the wide spool 290. The strip 74 then moves over a supportingfloor 358 to reach a pair of superposed pulleys 362. One of thesuperposed pulleys 362 is an actuated pulley 366 driven by a servo motor370, or any other mean for achieving the task, and can optionally betoothed to engage the weights 70 and prevent slipping along the strip74. Accurate contact with the weights 70 is ensured by a contactingpulley 374 opposed to the actuated pulley 366.

A number of sensors are used to manage feeding of the strip 74 from thespool 290 with the feeding module 30. The sensors are going to beidentified with capital letters in the description as listed below inTable 1. The list of sensors that can be used in the balancing weightapplication apparatus 10 follows.

TABLE 1 Sensors description Location Sensor type A Weights stripthickness on spool (remaining quantity) Supplying module Laser B Weightsstrip first loop accumulation (radial for tension in Feeding moduleProximity strip) (photocell) C Weights strip first loop accumulation(right lateral for strip Feeding module Proximity alignment) (metaldetection) D Weights strip first loop accumulation (left lateral forstrip Feeding module Proximity alignment) (metal detection) E Weightsstrip presence before feeding module toothed Feeding module Proximitywheel (optic fiber) F Weights strip presence after feeding moduletoothed Feeding module Proximity wheel (optic fiber) G Weights stripsecond loop accumulation Feeding module Laser H Weights strip presenceapplicator module entry (before Dispensing module Proximity toothedwheel in embodiment 1 and before lifting floor in (optic fiber)embodiment 2) I Weights strip junction tape presence; strip jointDispensing module Contrast identification (before toothed wheel inembodiment 1 and before lifting floor in embodiment 2; but just beforepeeler to lower peeler at joint) J Weights strip protection tapepresence (protective tape Dispensing module Contrast removalconfirmation after peeler) K Weights localization (in-between weightsaligned with Dispensing module Proximity cutter) (optic fiber) L Weightslocalization in application module in position for Dispensing moduleProximity hand (optic fiber) M Applicator hand location about wheelApplication module Laser 3x N Axial sensor on tool Application moduleProximity O Wheel profile Conveying module Laser P Wheel size, color anddot localization Conveying module Camera Q Wheel presence on conveyormodule (end of line) Conveying module Proximity (photocell) R Weightpresence sensor on tool Application module Laser

So, proximity sensor B is used to detect the proximity of the strip 74at the first loop 378, after the spool 290 and before the intake pulley354 of the feeding module 30. The speed at which the spool 290 isactuated to unwind the strip 74 can be modified with the management ofthe motor 310 to keep the first loop 378 within a desired range. If therange of the first loop 378 is getting too small, the unwinding of thestrip 74 is going to accelerate and, conversely, if the range of thefirst loop 378 is getting too large the unwinding of the strip 74 isgoing to decelerate. Two proximity sensors C, D are detecting thelateral proximity of the strip 74 thereof to manage and adjust thelateral location of the carriage 338 accordingly. If the strip 74 movescloser to lateral sensor C, the carriage is going to move in thedirection of lateral sensor C to re-align the position of the strip 74between the two lateral sensors C, D. In contrast, if the strip 74 movescloser to lateral sensor D, the carriage is going to move in thedirection of lateral sensor D to re-align the position of the strip 74between the two lateral sensors C, D. Another sensor E is detecting thestrip 74 presence before the feeding module 30 superposed pulleys 362.Sensor F is detecting the strip 74 presence after the feeding module 30superposed pulleys 362. Lateral movements of the carriage 338 in bothlateral directions are illustrated in FIG. 12 and FIG. 13. One canappreciate from FIG. 14 an isometric view of isolated feeding module 30supported by its frame 382.

Sensor G is detecting the proximity of the strip's 74 second loop 386 toadjust the range of the second loop 386 within a desired range. Theloops 378, 386 are wanted to reduce the effect of possible supplyingrate variation of the strip 74 to the rest of the balancing weightapplication apparatus 10. For example, if the supplying rate is too slowor too fast, the first loop 378 is going to damp the rate variation.Another example is during a spool 78 replacement. The additional strip74 in the first loop 378 and the second loop 386 can be used when thenew spool 78 is installed. The additional strip 74 in the first loop 378and the second loop 386 can be adjusted to prevent the balancing weightapplication apparatus 10 to stop and maintain a continuous functioningwhen replacing empty spools 78 with new spools 78 full of weights 70. Aremovable bridge 390 can optionally be installed between the feedingmodule 30 and the dispensing module 40 to ease the connection betweenthe end of a strip 74 and the beginning of a new strip 74.

An exemplary drive mechanism 400 for the dispensing module 40 isembodied in FIG. 15. The drive mechanism 400 is used in this embodimentto move the strip 74 of weights 70 toward the application module 50. Thedrive mechanism 400 is driven by, inter alia, a servo motor 404operatively rotating circular drive portion 408. The circular driveportion 408 of the illustrated embodiment is a toothed drive wheel 412where each tooth is sized to engage a weight 70. The toothed wheel 412includes an array of radial protrusions 416 configured to engageintervening sides of the weights 70 to drive the strip 74 withoutslippage. The illustrated embodiment depicts a toothed drive wheel 412including an optional radial void portion 416, that is a space made tofit a strip supporting member engaging in the radial void portion 416 toprovide a continuous vertical support to the strip 74 along the strip 74displacement and transfer to or from the wheel 748. The radial voidportion 416 is allowing toothed drive wheel 412 lateral contacts withthe weights 70 while being supported all along. The oppositeconfiguration can also be used and the toothed drive wheel 412 canalternatively include a pair of radial void portions on axial each sidethereof. The strip 74 is driven on a supporting rail 420 and islaterally guided by removable side rails 424. Optionally, the side rails424 include upper rails 426 ensuring the strip 74 of weights 70 is notgoing to lift and disengage from the toothed drive wheel 412. The siderail 424 is removably secured with some fasteners 420. The toothed drivewheel 412 is generally located below the rail 424 and partially extendsthrough the rail 424 to engage the weights 70. The motor 404 is a servomotor that can be selectively actuated to move the strip 74 of a desiredlength/mass to dispense a desire number of weights 70 to be applied on awheel. The motor 404 is interconnected with a gearbox 428 that canmodify the ratio of the motor 404, if desired. The gearbox 428 alsochange the direction of the drive axis 432 of the motor 404 of 90degrees in accordance with the mechanical requirements of theillustrated embodiment.

In contrast, FIG. 17 illustrates a rail 420 of the dispensing module 40that is not used in conjunction with a servo motor 404 and a drive wheel412 in a motor-less embodiment of the invention. Instead, the embodimentdepicted in FIG. 17 is using the robot tool 640 of the applicationmodule 50 to pull drive the strip 74 instead of a drive wheel 412 aspreviously described. In this configuration, the robot 636 of theapplication module 50 is going to pull and/or push the strip 74 ofweights 70 along the rail 420 in consequence of the instructions to doso provided by the control module 1066.

The strip 74 of weights 70 includes a tape 76 covered with a protectiveliner 436 preventing a sticky portion 456 of the tape 76 to undesirablystick to other objects or get dirty and eventually not stick properly tothe wheel. The protective liner 436 must be removed before securing theweights 70 to the wheel. A liner peeler 440 is part of an embodiment ofthe dispensing module 50 to remove the liner 436, as depicted in FIG.17, showing the motor-less embodiment described above. The peeler 440 isoperatively located near the end of the rail 420 to peel the liner 436before the weight 70, or the series of weights 70, is taken by theapplication module 50 to be secured to the wheel. As illustrated in theembodiment, the peeler 440 has a hook-shaped configuration that includesa liner-contacting portion 444 moving between a low liner-engagingposition 448 and a high liner-removing position 452. The liner-engagingposition 448 locates liner-contacting portion 444 low on the tape 76 torub the tape 76 and remove the liner 436 from the tape 76. Theliner-contacting portion 444 of the peeler 440 can even interfere withthe thickness of the tape 76, in the sticky portion 456 of the tape 76,lower than the thickness of the liner 436 of about between 0 mm and 1 mmas illustrated in FIG. 17(D), to engage the beginning of the liner 436.Once the liner 436 is engaged the liner-engaging portion 448 of thepeeler 440 can be raised to the liner-removing position 452, asillustrated in FIG. 17(E), slightly above the tape 76 of about between 0mm and 4 mm, to prevent touching the tape 76. A liner-guiding edge 454disposed slightly above the tape 76 is used in cooperation with thepeeler 436 to direct the liner 436 in a different direction than theweights 70. The removed liner 436 can optionally be ejected in a linerguide 460 to help prevent undesirable mix up of the tape 76 in themechanism. Movement of the peeler 436 between the liner-engagingposition 448 and the liner-removing position 452 is managed by a peeleractuator 464 to perform a fraction of a turn about a peeler axis 468 toreach the two positions 448, 452. The peeler actuator 464 can beembodied as a pneumatic cylinder with a limited stroke or anotheractuator adapted to perform the desired movement. An optionalstrip-locking mechanism 472 is depicted in FIG. 17(C). The strip-lockingmechanism 472 selectively locks the strip 74 in the rail 420 when nomovement of the strip 74 is desirable. Strip 74 presence sensor H ispreceding the peeler 436 to detect the strip 74 presence. Weights stripjunction tape presence sensor I is located just before the peeler 440 toactuate the peeler 440 when a liner 436 discontinuity is detected sothat the peeler 440 can be lowered and be placed in the liner-engagingposition 448.

An alternate embodiment for removing the liner 436 from the strip 74 isillustrated in FIG. 18. The tape 76 can be manufactures with someadditional properties. For instance, the liner 436 protecting the tape76 can react to heat and detach from the sticky portion 456 of the tape76. A heat gun 480 blows hot air through a directing nozzle 484 to heatthe tape 76 and detach the liner 436 to engage the tape 76 with thepeeler 440. The hot air from the nozzle 484 is directed to the region ofthe peeler 440 to locally heat the tape 76 for a predetermined durationto avoid overheating the tape 76. The heat gun 480 can be selectivelyactuated when a new strip 74 of weights 70 is feed in the balancingweight application apparatus 10, when the strip junction tape presencesensor I senses a discontinuity in the tape 76, to put the peeler 440 inthe liner-engaging position 448 to engage the forward end of the liner436 with the peeler 440. The actuation mechanism managing thedisplacement of the strip 74 in the dispensing module can move back thestrip 74 when a junction tape or a liner 436 is sensed by presencesensor I by moving back the strip 74 and attempt to re-engage the liner436 with the peeler 440 with a following forward movement of the strip74.

It is also possible to appreciate from FIG. 18 and FIG. 19 thedispensing module 50 is optionally equipped with a liner-cuttingmechanism 490 including an actuator 494 actuating a scissor portion 498following the liner guide 460 (not illustrated in FIG. 18). The liner436 can hence be cut to a predetermined length in order to more easilymanage the removed liner 436.

Additionally, from FIG. 18 throughout FIG. 24, a strip-cutting mechanism502 is shown. The strip-cutting mechanism 502 is used to cut portions ofthe strip 74 to provide a predetermined number of weights 70 equivalentto the required mass for balancing the wheel. The strip-cuttingmechanism 502 is located near the end of the rail 420 of the dispensingmodule 50 to cut the strip 74 between two adjacent weights 70. It isundesirable the strip-cutting mechanism 502 tries to cut the strip 74 inthe middle of a weight 70. Therefore, an additional sensor K locatednear the end of the rail 420 is used to detect the presence of a weight70. Sensor K is preferably installed orthogonal with the strip 74 and isdisposed at a location where it can detect a weight 70 or an empty spacebetween two adjacent weights 70. When properly adjusted, sensor K mustnot detect a presence of a weight 70 along its first sensing line 526aligned with the strip-cutting mechanism 502 to make sure there is noweights 70 along the line of cut for the strip-cutting mechanism 502 tobe actuated. Sensor K has an optional second sensing line 530 locatedless than a length of a weight 70 further to detect a presence of aweight 70 when none is supposed to be present. It can be appreciatedfrom FIG. 20 a) the side rails 426 includes an opening to let the firstsensing line 526 pass through and gets to the strip 74 to identify theposition of the weights 70. One of the side rail 424 is removablysecured in its operating position with a rail clamp 534. The side rail424 can be moved along a guiding rail 538 equipped with a stopper toease manipulation of the strip 74 on the rail 420 when required.

The strip-cutting mechanism 502 includes a housing 506 supporting acutting member 510 in a position perpendicular to the strip 74. Thecutting member 510, embodied as a circular blade 514 is reciprocallymoved by an actuator 518 along supporting rails 522 as best seen in FIG.21. The construction of the strip-locking mechanism 472 is depicted inFIG. 21 with more internal details. As it can be appreciated, thestrip-locking mechanism 472 includes a weight-engaging portion 546 with,preferably, a cooperating surface 550 matching the shape of a weight 70with protruding portions 552 engaging between the weights 70 to lock theweight 70 in the rail 420. This prevents any longitudinal movement ofthe strip 74 along the rail when the strip-cutting mechanism 472 isactuated. The weight-engaging portion 546 is movable between aweight-engaging position 554, illustrated in FIG. 19(A), and a releasedposition 558 illustrated in FIG. 21(B). A pneumatic cylinder 562 isincluded in the embodiment to actuate the weight-engaging portion 546when the desired quantity of weights 70 is provided by the dispensingmodule 50.

Sensor J is illustrated in FIG. 22. The purpose of sensor J is to usethe reflectivity, the color or the contrast of the strip 74 to controlif the liner 436 has been removed from the strip 74 passed the blade514. The liner 436 has a distinct reflectivity, color or contrast thanthe sticky portion 456 and sensor J is a way to verify the liner 436 isremoved.

Moving now to FIG. 23 and FIG. 24 depicting in greater details thestrip-cutting mechanism 502 as embodied for illustrating purposes. Thecutting member 510 is exemplified as a circular blade 514 supported by ablade housing 566 manufactured with two housing housing halves 570, 574.Housing halve 570 is removably secured in place with a locking mechanism578 giving access to the blade 514. The blade 514 of the illustratedembodiment is toothless, non-motorized and is rotating when contactingthe strip 74 by the linear motion of the housing 566. The combinedeffect of the linear motion of the housing and the contact between theblade 514 and the strip 74 creates a rotation of the blade 514 that issufficient to cut the tape 76 holding the weights 70 together. The blade514 is supported by an arrangement of axle 582 and bearings 586. Aone-way bearing is optionally used to make the blade 514 rotate alwaysin a single direction instead of having a reciprocal movement thereof.The single direction rotation of the blade 514 makes the entirecircumference of the blade 514 be used for cutting the strip 74 and alsoensures the blade 514 wears out equally all around and prolong bladereplacement cycles. The housing 566 also includes an opening 590 to alubricant reservoir 594 interacting with the blade 514 to lubricate theblade 514 and ease cutting of the strip 74. The lubricant, oil or otherproper lubricant, can be soaked in a sponge 598 material to prevent anyleaking.

FIG. 25 illustrates an alternative embodiment of the dispensing module40 using two dispensers 852.1 and 852.2, each provided with its ownliner-removing mechanism 856. The peeler 440 remains pivotally connectedas previously discussed in respect with FIG. 17. Once the liner 436 isremoved from the strip 74 it is routed in an arcuate channel 860 to anautomatic shredder 864 to be cut in small liner portions vacuumedthrough pipes 868 to a vacuum generator 872 and extracted from theprocess with the air flow thereof. The strip 74 is cut with a knifemechanism 876 actuating an angled straight or curved blade 884 thatmoves downward to cut the strip 74. Prior to cutting the strip 74, astrip stopper 888 using an actuator 892 and a break member 896 pivotallyconnected to the frame. The break member 896 is hence actuated between arelaxed position and a break position momentarily squeezing the strip 74in the upper direction, between the rails 424 just a little before theangled blade 884 of the knife mechanism 876, when the strip 74 is cut.This allows for stopping a strip 74 of weights 70 when it remains only afew weights 70 in the strip 74 since the break member 896 engages thelast weight 70 before the blade 884. The two dispensers 852.1 and 852.2are disposed in parallel and are adapted to provide redundancy formaintenance purposes. The two dispensers 852.1 and 852.2 are also usedto dispense weights 70 of different configurations to offer a choicedecided in function of the wheel 748 to be balanced. For instance, blackweights 70 can be dispensed with dispenser 852.1 and be used forbalancing black and dark colored wheels 748. In contrast, dispensers852.2 is providing gray weights 70 that are selected for aluminum orlight-colored wheels 748. Other uses of two or more dispensers 852 arecontemplated in the present application and could be used for otherbenefits while remaining within the scope of the present application. Itis also possible to appreciate each of the two dispensers 852.1 and852.2 are provided with their own sensor J, respectively disposed toextend their sensing at an angle from vertical and in opposeddirections, mostly for reasons of maximizing the sensors captioncapability given the reflection properties of the liner and the otherportions of the strip 74. Optimal sensing angle appears to be aboutbetween 30 degrees and 40 degrees.

Another embodiment is illustrated in FIG. 26 and FIG. 27. Actually, thedispensing module 50 can be utilized without the application module 60(seen in FIG. 1) when embodied differently. In that respect, thedispensing module 50 can be alternatively equipped with aweights-receiver 602 collecting the cut portions of strips 74 for theirmanual installation by a worker. The worker is hence able to take thecut portions of strips 74 by hand on a weight-receiver ramp 606. Theheight and the angle of the weight-receiver ramp 606 is adjustable withan adjustment mechanism 610 to offer a plurality of ergonomic positionsbetween a low position 614 illustrated in FIG. 26 and a high position618 illustrated in FIG. 27. The weight-receiver ramp 606 ends with astopper 614 to prevent weights 70 to fall off the weight-receiver ramp606. Sensor L can be located after the peeler 440 and the blade 884 toacknowledge if a weight 70 is ready to be collected by the tool 640 ofthe robot 636 (not illustrated). Alternatively, sensor L can be locatedon the weight-receiver ramp 606 for confirming manual pickup of theweight(s) 70.

The application module 60 is automated with an industrial robot 636 wellseen in the embodiment illustrated in FIG. 28. The robot 636 is equippedwith a weights application tool 640 designed to move one or a series ofweights 70 to from the dispensing module 40 to the wheel to balance. Apossible embodiment of the tool 640 is illustrated with additionaldetails in FIG. 29. The tool 640 includes at least one weights-holder644 including a series of juxtaposed weights-receivers 648. Eachweights-receiver 648 is preferably bordered with ridges 652 forindividually locating each weight 70 on the weights-holder 644. Theweights-holder 644 has a semi-circular shape 656 sized and designed tofit inside the wheel and secure the weights 70 to the surface of thewheel. Preferably, for ease of moving and applying weights 70 inside thewheel, the outside diameter of the tool 640 and weights-holder 644assembly should be smaller than the internal diameter of the wheel. Theweights-holder 644 can be manufactured as a single part with the toolhub portion 660 or be manufactured in separate parts. The tool hubportion 660 is embodied with a series of radially extending portions664. The weights-holder 644 may include a central recessed portion 668designed to cooperate with a weights support 672 (best seen in FIG. 20a). when the tool 640 receives the weights 70 from the dispensing module50. Once the dispensing module 50 has cut the desired strip 74 length,the cut portion of the strip 74 of weights 70 remains supported by theircentral region by the weights support 672 while the weights-holder 644moves under the weights support 672 and lift toward the weights 70 toengage and move the weights 70. The central recessed portion 668 of theweights-holder 644 is using the thickness of the tool hub portion 660that secures two distinct weights-holder portions 676 in the illustratedembodiment.

The tool hub portion 660 is also configured to secure thereon a firstweights-holder 644.1 and a second weights-holder 644.2. The secondweights-holder 644.2 can be desirable to reduce the moving time of therobot 636 between the dispensing module 50 and the wheel. Indeed, thesecond weights-holder 644.2 can be charged with a second set of weights70 and allow the weights application tool 640 to secure two sets ofweights 70 to the wheel with a single movement between the dispensingmodule 40 and the wheel. For example, a dynamic balancing of the wheelgenerally locating weights 70 at different axial distances in the wheelcan be achieved with a single movement of the tool 640 between thedispensing module 50 and the wheel. In an embodiment, theweights-holders 644 can be axially offset 680 in respect with the toolhub portion 660. The offset weights-holders 644 allows for a moreprecise location of the weights 70, reduction of the robot 636 traveldistance and allows securing weights 70 axially closer to the center hubof the wheel. For example, the second weights-holder 644.2 is completelyoffset on one side of the tool hub portion 660 while the firstweights-holder 644.1 is centered with the tool hub portion 660. Otherconfigurations, the use of spacers, different angular positions of theweights-holders 644 and other adjustments thereof remain within thescope of the present application.

As best seen in FIG. 21, FIG. 29 and FIG. 30, each weights-holder 644has a trailing side 684 and a leading side 688. The robot 636 can usethe tool 640 in each rotatable direction in reference with the leadingside 688 and the trailing side 684 of the weights-holder 644 to collectthe weights 70 thereon. A first configuration uses the leading side 688portion of the weights-holder 644 to receive the weights 70 thereon. Therequired magnets-receiving portions 704 on the leading side 688 arehence filled with weights 70. This configuration is illustrated in FIG.19. Conversely, a second configuration uses the trailing side 684 of theweights-holder 644 to receive the weights 70 thereon. This configurationis illustrated in FIG. 21. Using the trailing edge of the weights-holder644 to receive the weights 70 promotes an additional use of theweights-holder 644.

In the second configuration, the trailing side 684 is the edge that ismoved next to the dispensing module 50 when the weights-holder 644 isreceiving the weights 70 from the dispensing module 50. The leading side688 is the edge that is located further from the dispensing module 50when the weights-holder 644 is receiving the weights 70 from thedispensing module 50. Put differently, the tool 640 is configured tofill the weights-receivers 648 starting toward the leading side 688, inconsideration of the number of weights 70 to be secured on the tool,progressively toward the trailing side 684 to fill the lastweights-holder 644 toward the trailing side 684. All the lastweights-receivers 648 are hence filled with weights 70.

A magnified illustration of a weights-holder portion 676 is shown inFIG. 29. The weights-holder portion 676 has a semi-circular shape abouta radius 692 with its exterior circumference 696 ideally smaller thanthe diameter of the interior of a wheel to fit into the wheel and securethe portion of strip 74 to the proximal surface of the wheel. Theweights-holder portion 676 are preferably made of non-ferromagneticmaterial, like aluminum, plastic or stainless steel, to allow magneticmeans to hold the weights 70 thereon. The weights-holder portion 676uses a series of magnets 700 housed in magnet-receiving portions 704disposed in the weights-holder portion 676 along its exteriorcircumference 696. The magnets 700 are press-fitted or glued in theirrespective magnet-receiving portions 704. A radial opening 708 is givingaccess behind each magnet 700 to insert a pin tool 724 to push on themagnet 700 through the radial opening 708 and push on the magnet 700 toremove the magnet 700 from its magnet-receiving portion 704. One canappreciate that the trailing side 684 includes a larger and strongermagnet 712 housed in a larger magnet-receiving portion 716. The largermagnet 712 is helpful to sufficiently secure a single weight 70 to theweights-holder portion 676 when a single weight 70 is required. Thelarger magnet 712 is also material in cutting the strip 74 by tearingthe strip 74 between adjacent weights 70 as illustrated in FIG. 30.

It can be more clearly appreciated from the embodiments illustrated inFIG. 29 that the weights-holders 644 are equipped with a pair ofoptional 70 lateral weight holders 736. The pair of weight 70 lateralholders 736 are disposed on each side of the weights-holders 644bordering the last weight-holder portion 676.1 to further retain theweight 70 located in the last weight-holder portion 676.1. This isdesirable to ensure the weight 70 in the last weight-holder portion676.1 is firmly maintained in place and is not going to twist in orunsecure from the weights-holder 644. This is particularly useful when asingle weight 70 is held by the weights-holder 644 and is not helped byadjacent weight 70 to remain in place in respective weight-holderportions 676. The risk of twisting or unsecuring a weight 70 in the lastweight-holder portion 676.1 is increased when the tool 640 is used todetach a weight 70 or a series of weights 70 from the strip 74 ofweights 70. The use of the tool 640 to split the tape 76 holding theweights 70 in strip 74 is an alternate embodiment illustrated in FIG.30. A pivotal motion of the tool 640 is illustrated in FIG. 30 to cutthe tape 76. FIG. 30(A) depicts the tool 640 with the weights-holder 644securing a single weight 70 thereon on the last weight-holder portion676.1 with the weights-holder 644 longitudinally aligned with the strip74. FIG. 30(B) illustrate a pivotal motion 740 of the weights-holder 644to increase tension in one lateral side of the tape 76 and breakup thetape 76 to separate the weight 70 secured in the weights-holder 644. Thelateral holders 736 are further maintaining the weight 70 in place whenthe weights-holder 644 enable the pivotal motion 740 to prevent theweight 70 to pivot and remain properly in place on the weights-holder644. A translational motion 744 of the tool 640 is illustrated in FIG.30(C) to further separate the weight 70 secured in the weights-holder644 from the strip 74. This embodiment can be used without thestrip-cutting mechanism 502 or in conjunction with the strip-cuttingmechanism 502 without departing from the scope of the present invention.

FIG. 31 shows another embodiment where sensor R is detecting thepresence of one or more weights 70 present on the tool 640. The tool 640of the illustrated embodiment is equipped with a pair of weights-holders644.1, 644.2 spaced apart with a recessed portion 668 to allow theprojection of sensor R to sense the entire region of theweights-receivers 648 to detect the undesired presence of one or moreweights 70 on the tool 640. The recessed portion 668 can be spaced apartwith spacers 918 or with the thickness of the hub portion 660 or thetool 640. The sensor R can be fixedly maintained and the tool 640, oncethe central recess portion 668 is aligned with the projection 914 ofsensor R, is translated to move the projection of sensor R through thecentral recessed portion 668 and detect the undesirable presence ofpossibly remaining weights 70 on the tool 640. For instance, FIG. 31(A)illustrates a remaining weight 70 on the tool 640 that is sensed bysensor R. In contrast, FIG. 31(A) illustrate the projection 914 ofsensor R. The tool 640 is moved next to a weights-remover 918 when anundesired weight 70 is sensed by sensor R to engage the central recessportion 668 of the tool 640 with a weights remover member 922 sized anddesigned to fit in the central recessed portion 668. A translation and arotation of the tool 640 allows the weights remover member 922 to removethe weights 70 that is going to disconnect from the tool 640 and beready for receiving new weights 70 thereon.

The tool 640 is equipped with three proximity sensors M disposed atabout 120 degrees from each other in respect with the axis 642 of thetool 640, as exemplified in FIG. 32 illustrating an embodiment thereof.The proximity sensors M can be embodied as laser sensors and arecollectively sensing the location of the tool 640 inside the wheel 748,illustrated with a tire 750 installed thereon, using, for instance,triangulation methods. The projecting lines 752 of the laser sensors Mare illustrated in FIG. 32. The robot 636 moves the tool 640 inside thecenter portion of the wheel 748 and the sensors M are acquiringmeasurements of the wheel's shape, interior profile 764 and dimensionswhen the tool 640 moves toward the center hub 756 of the wheel 748. Thisis a contactless interaction of the tool 640 with the wheel 748resulting in an automatic detection of the characteristics of the wheel748. With the acquired measurements of the wheel's characteristics it ispossible to locate in space the tool 640 of the robot 636 precisely at adesired location without referring to a wheels' characteristicsdatabase. This process for acquiring measurements of the wheel'scharacteristics is done in real time for each wheel 748 coming on thewheel-conveying module 60 hence allowing for weights 70 installation onwheels 748 of various shapes and dimensions. In other words, wheels 748of different characteristics can easily be balanced one after the otherwithout requiring a precise order or be grouped in set of four similarwheels, for instance. The axial position of the tool 640 can beidentified by an axial sensor N disposed on the tool 640 in anembodiment. The tool 640 can alternatively use the robot's 636 sensingcapability, if available, and move the tool 640 axially in the wheel 748until a contact occurs between the tool 640 and the center hub 756 ofthe wheel 748 to axially locate the tool 640 in respect with the centerhub 756 of the wheel 748. In embodiments thereof, the robot 636 canrecord the pressure applied on the weights 70 when securing the weights70 to the wheel 748. The pressure used for securing each weight 70 toits associated wheel 748 is hence recorded for product traceability.

The tool 640 of the robot 636 can be managed in relation with a wheeland tire assembly on a basis of the data provided by sensor M withprojection 752 that detect the wheel geometry. In contrast, the tool 640of the robot 636 can be managed on a basis of an image of the wheel andtire assembly provided by camera sensor P and sensor O. The two methodsof obtaining the data is good and the latter prevents requiring sensorM.

The wheel 748 and tire 750 assembly is brought for balancing weights 70application on a conveyor 780 in the embodiment illustrated in FIG. 34.The embodiment is directed to a conveyor 780 for transporting the wheel748 and tire 750 assembly however other means for transporting the wheel748 and tire 750 assembly like an industrial robot 636, a suspensionmechanism, a rail on which the wheel 748 and tire 750 assembly rolls tothe next station remains within the scope of the present invention. Theaforementioned description is going to focus on a conveyor mechanism tofacilitate the reading of the specification without disclaimer or othersuitable substitute systems. The wheel 748 and tire 750 assembly ispresented supported horizontally on the conveyor 780 although the wheel748 and tire 750 assembly could be brought vertically or in othersuitable positions, including suspended to an appropriate mechanism,without departing from the scope of the present application. Theconveyor 780 is supported by a frame 784 and is at a height sufficientto allow weights 70 installation from underneath. Installation of theweights 70 from above is another non-illustrated embodiment encompassedby the present description. The conveyor 780 of the illustratedembodiment is equipped with a pair of wheel-supporting belts 788selectively actuated by a motor 792. The conveyor 780 can be actuated inforward 808 and in reverse 812 directions to position the wheel 748 andtire 750 assembly as desired on the conveyor 780. The pair ofwheel-supporting belts 788 are supporting two sides of the wheel 748 andtire 750 assembly hence allowing miscellaneous sensing, with sensors Oand P, therebetween in addition to provide room for the robot 636 tool640 to reach the wheel 748 and secure the weights 70 to the wheel 748.The motor 792 can be a servo motor, a step motor, hydraulically orpneumatically actuated to precisely carry the wheel 748 and tire 750assembly in a weights-application position 796. The illustratedembodiment includes a servo motor 800 optionally interconnected with agearbox 804 to drive the conveyor 780. A pair of lateral rails 808secured at proper height to the frame 784 is optionally illustrated toprovide an additional feature to keep the wheel 748 and tire 750assembly on the conveyor 780.

The balancing weight application apparatus is hence adapted forautomatically identifying characteristics of a wheel and securingwheel-balancing weights thereon, the apparatus comprising moving a wheeltoward a wheel-balancing weights securing position, sensing a wheelcharacteristics, sensing a wheel reference location, providing a firstpredetermined quantity of wheel-balancing weights and securing the firstpredetermined quantity of wheel-balancing weights to a first position onthe wheel. The balancing weight application apparatus can sense thewheel characteristics with a camera and/or a laser sensor, whereinsensing of the wheel characteristics is performed while the wheel andtire assembly is moving toward the wheel-balancing weights applicationposition, wherein the wheel characteristics are not collected from awheel and tire assembly characteristics database, further comprisingidentifying a second position on a basis of the first position forsecuring a second predetermined quantity of wheel-balancing weights tothe wheel on a basis of the second position.

The conveyor 780 is functioning in cooperation with sensor O capable ofcapturing the profile of the interior portion of the wheel 748. Sensor Ois embodied in FIG. 34 and FIG. 35 as a laser proximity sensor securedto the frame 784 and directed at an angle toward the conveyor 780. Theprojection beam 816 is projected angularly to get a plurality ofreadings when the wheel 748 and tire 750 assembly is moving on theconveyor 780. Sensing the profile of the wheel 748 when the wheel 748 ismoving is efficient because the wheel 748 and tire 750 assembly does notneed to stay still for analyzing the shape of the wheel 748. The speedof the conveyor 780 is known and used in conjunction with a belt encoderand/or repetitive timely distance sensing between the wheel 748 andsensor O to generate a profile 820 of the interior portion of the wheel748. A common time stamp is on way to put all the data together. Alldata from the sensors are associated with the common time stamp. Thedata associated with the same common time stamp is put together toobtain all information required for operating the tool 640 of the robot636 or any other relevant equivalent system. The profile of the interiorportion of the wheel 748 is used by the system's logic to manage themovements of the robot 636 and position the tool 640 at desiredlocations to precisely secure the weights 70 on the interior portion ofthe wheel 748 in accordance with the required assembly for balancing thewheel 748 and tire 750 assembly.

Another sensor P, embodied as a camera, is operatively located about theconveyor 780 of acquire an axial image of the wheel 748 and tire 750assembly. Sensor P is illustrated under the conveyor 780 although itcould be located at other locations appropriate to get the desired imagewithout departing from the scope of the application. The image of thewheel 748 and tire 750 assembly is acquired by sensor P either with thewheel 748 and tire 750 assembly in movement or still on the conveyor780. The image obtained from sensor P can be used for a variety ofpurposes. Among possible purposes, the image can be used to identify theradius of the wheel 748, the color of the wheel 748, the part number ofthe wheel, the location on the tire 750 of the indicator 824, generallya colored dot, of the orientation of the heaviest/lightest portion ofthe tire 750 that is also used to angularly locate the weights 70required to balance the wheel 748 and tire 750 assembly. The angularlocation of the weights 70 is based in reference of this indicator 824by the wheel-balancing analyzer apparatus (not illustrated) and the datausable to secure the weights 70 are their intended locations is at leastpartially based thereon by the system. A plurality of weights 70 must beinstalled on a wheel for dynamically balancing a wheel. A first set ofweights 70 can be located and secured on the wheel on a basis of the doton the wheel. The dot, or any other identification on the wheel/tire forlocating the weights thereon is used as a primary reference and theother set(s) of weights 70 can be located and secured using a relativeposition in respect with the location of the first set of weights.

Another sensor is located on the wheel-conveying module 60 to validate aweights-installation position 828 of the wheel 748 and tire 750 assemblywhen the wheel 748 and tire 750 assembly are reaching the location onthe conveyor 780 where the robot 636 is going to be accurately moving inrespect with the weights-installation position 828 of the wheel 748 andtire 750 assembly. There is a possibility the wheel 748 and tire 750assembly slips on the conveyor 780 or that the wheel 748 and tire 750assembly unintentionally moves on the conveyor 780 generating adiscrepancy between a calculated weights-installation position 828 ofthe wheel 748 and tire 750 assembly and the physicalweights-installation position 828 of the wheel 748 and tire 750assembly. Sensor Q, illustrated in FIG. 34 and FIG. 35, is located on aside of the conveyor 780 in a transverse projection orientation to sensethe tire 750 when the wheel 748 and tire 750 assembly are reaching theweights-installation position 828. Thus, the physical location of thewheel 748 and tire 750 assembly is known when sensor P is sensing theedge of the tire 750 on the conveyor 780. This information can be usedto stop the movement of the conveyor 780 and calculate the possiblediscrepancy between the calculated weights-installation position 828 ofthe wheel 748 and tire 750 assembly and the physicalweights-installation position 828 of the wheel 748 and tire 750assembly. The reference position used by the robot 636 is going to beadjusted consequently to ensure the robot 636 is not going to interferewith the wheel 748 and tire 750 assembly and the required weights 70 aregoing to be secured on the wheel 748 at the correct positions. One canappreciate sensor Q is illustrated projecting its sensing beam at anangle in reference with the horizontal. This is intended to help preventobtaining a reading from sensor Q that is undesirably obtained with areading of a lower portion of a thread of the tire 750. A reading fromthe bottom of a thread could create a misreading of the real location ofthe tire 750 and cause a loss of accuracy for installing the weights 70.Other configurations could be possible to reach the same results howeverit is unlikely that a straight thread be precisely aligned with theangle of sensor's Q projection.

Sensor O can be calibrated to ensure proper reading of the distance andthe angle of the projection beam 816. FIG. 36 illustrates a possiblecalibration embodiment using two calibration rulers 840.1 and 840.2. Thefirst calibration ruler 840.1 is located on a horizontal surface of theconveyor frame 784. The second calibration ruler 840.2 is secured to aremovable frame support 844. The distance and the angle between bothcalibration ruler 840.1, 840.2 is known and the reading of the sensor'sprojection beam 816 on both calibration ruler 840.1, 840.2 can be usedto precisely identify the location, distance and projection angle ofsensor O in respect with the conveyor 780. The calibration ruler 840.1is embodied on a transparent support plate 848 through which theprojection beam 816 of the sensor O can pass and reach the secondcalibration ruler 840.2. The second calibration ruler 840.2 is locatedon a temporary and removable support 844 at a height over the conveyor780 to accommodate the projection beam 816 angle required to reach theinterior diameter of the wheel 748.

FIG. 37 and the following discussion provide a brief, generaldescription of an exemplary computer apparatus with which at least someaspects of the present invention may rely upon to be implemented. Someaspects of the present invention will be described in the generalcontext of computer-executable instructions being executed by a computerapparatus interacting with a robot 636. However, the methods of thepresent invention may be effected by other apparatus. Program modulesmay include routines, programs, objects, sequences, components, datastructures and other networked centered applications, etc. that performa task(s) or implement particular functions when confirmed by thesensors described above. Moreover, those skilled in the art willappreciate that at least some aspects of the present invention may bepracticed with other configurations, including Programmable LogicController, industrial hand-held devices, multiprocessor systems,microprocessor-based or programmable consumer electronics, networkcomputers, minicomputers, set top boxes, mainframe computers and thelike. At least some aspects of the present invention may also bepracticed in distributed computing environments where tasks areperformed by remote processing devices linked through a communicationsnetwork. In a distributed computing environment, program modules may belocated in local and/or remote memory storage devices 1164.

With reference to FIG. 37, an exemplary apparatus 1100 for implementingat least some aspects of the present invention includes a generalpurpose computing device in the form of a conventional computer 1120.The computer 1120 may include a processing unit 1121, a system memory1122, and a system bus 1123 that couples various system components,including the system memory 1122, to the processing unit 1121. Thesystem bus 1123 may be any of several types of bus structures includinga memory bus or memory controller, a peripheral bus, and a local bususing any of a variety of bus architectures. The system memory mayinclude read only memory (ROM) 1124 and/or random access memory (RAM)1125. A basic input/output system 1126 (BIOS), containing basic routinesthat help to transfer information between elements within the computer1120, such as during start-up, may be stored in ROM 1124. The computer1120 may also include a hard disk drive 1127 for reading from andwriting to a hard disk, (not shown), a magnetic disk drive 1128 forreading from or writing to a (e.g., removable) magnetic disk 1129, andan optical disk drive 1130 for reading from or writing to a removable(magneto) optical disk 1131 such as a compact disk or other (magneto)optical media. The hard disk drive 1127, magnetic disk drive 1128, and(magneto) optical disk drive 1130 may be coupled with the system bus1123 by a hard disk drive interface 1132, a magnetic disk driveinterface 1133, and a (magneto) optical drive interface 1134,respectively. The drives and their associated storage media providenonvolatile (or persistent) storage of machine-readable instructions,data structures, program modules and other data for the computer 1120.Although the exemplary environment described herein employs a hard disk,a removable magnetic disk 1129 and a removable optical disk 1131, thoseskilled in the art will appreciate that other types of storage media,such as magnetic cassettes, flash memory cards, digital video disks,Bernoulli cartridges, random access memories (RAMs), read only memories(ROM), and the like, may be used instead of, or in addition to, thestorage devices 1164 introduced above.

A number of program modules may be stored on the hard disk 1127,magnetic disk 1129, (magneto) optical disk 1131, ROM 1124 or RAM 1125,such as an operating system 1135 (for example, Windows® NT® 4.0, sold byMicrosoft® Corporation of Redmond, Wash.), one or more applicationprograms 1136, other program modules 1137 (such as “Alice”, which is aresearch system developed by the User Interface Group at Carnegie MellonUniversity available at www.Alice.org, OpenGL from Silicon Graphics Inc.of Mountain View Calif., or Direct 3D from Microsoft Corp. of BellevueWash.), and/or program data 1138 for example.

A user may enter commands and information into the computer 1120 throughinput devices, such as a keyboard 1140, a camera 1141 and pointingdevice 1142 for example. Other input devices (not shown) such as amicrophone, joystick, game pad, satellite dish, scanner, a touchsensitive screen, accelerometers adapted to sense movements of the useror movements of a device, or the like may also be included. These andother input devices are often connected to the processing unit 1121through a serial port interface 1146 coupled to the system bus. However,input devices may be connected by other interfaces, such as a parallelport, a game port, blue tooth connection or a universal serial bus(USB). For example, since the bandwidth of the camera 1141 may be toogreat for the serial port, the video camera 1141 may be coupled with thesystem bus 1123 via a video capture card (not shown). The video monitor1147 or other type of display device may also be connected to the systembus 1123 via an interface, such as a video adapter 1148 for example. Thevideo adapter 1148 may include a graphics accelerator. One or morespeaker 162 may be connected to the system bus 1123 via a sound card1161 (e.g., a wave table synthesizer such as product number AWE64 GoldCard from Creative® Labs of Milpitas, Calif.). In addition to themonitor 1147 and speaker(s) 1162, the computer 1120 may include otherperipheral output devices (not shown), such as a printer for example. Asan alternative or an addition to the video monitor 1147, a stereo videooutput device, such as a head mounted display or LCD shutter glasses forexample, could be used.

The computer 1120 may operate in a networked environment which defineslogical connections to one or more remote computers, such as a remotecomputer 1149. The remote computer 1149 may be another personalcomputer, a server, a router, a network PC, a peer device or othercommon network node, and may include many or all of the elementsdescribed above relative to the personal computer 1120, although only amemory storage device 1164 has been illustrated in FIG. 37.

When used in a LAN, the computer 1120 may be connected to the LAN 1151through a network interface adapter (or “NIC”) 1153. When used in a WAN,such as the Internet, the computer 1120 may include a modem 1154 orother means for establishing communications over the wide area network1152 (e.g. Wi-Fi, WinMax). The modem 1154, which may be internal orexternal, may be connected to the system bus 1123 via the serial portinterface 1146. In a networked environment, at least some of the programmodules depicted relative to the computer 1120 may be store d in theremote memory storage device. The network connections shown areexemplary and other means of establishing a communications link betweenthe computers may be used.

Moving now to FIG. 38 depicting an exemplary control module 1066 used tomanage the balancing weight application apparatus 10. The control module1266 is in communication with a plurality of modules like the supplyingmodule 1270, feeding module 1274, the dispensing module 1278, theapplication module 1282 and the conveying module 1086. Each module isoperatively connected to the control module 1266. The sensors indicatedin FIG. 38 are listed in Table 1 above with additional details.

A general flow chart of the balancing weight application apparatus 10 isillustrated in FIG. 39. The process begins in this case with thereception of the mass required to balance a wheel 1300. The massrequired to balance a wheel is provided by another system that rotatesthe wheel and tire assembly and identify the locations and the massesrequired to balance the wheel and tire assembly. The balancing weightapplication apparatus 10 is not disclosing details about this stage thatcould be part of the present application. Then, wheel-balancing weights70 are supplied 1304. The weights 70 are fed 1308 in the balancingweight application apparatus 10. The weights 70 are then dispensed inquantity equivalent to the required balancing mass 1312. The wheel andtire configuration is analyzed 1316 and the application location(s) ofthe wheel balancing weights 70 are identified 1320. Finally, the weights70 are supplied and secured with the tool 640 to the wheel 748.

FIG. 40 illustrates a flow chart of an embodiment of the invention. Theembodiment is using a sensor-less tool 640 that is using the dataprovided by steps 1334, 1338, 1342 and 1346 for identifying trajectoriesand locations of the weights 70 to be secured on the wheel 748. A “wait”step can be added between step 1362 and step 1358 when the condition“NO” of step 1362 is satisfied.

A flow chart in FIG. 41 illustrating an embodiment related to the spoolsmanagement generally illustrated in FIG. 6 throughout FIG. 10. Theactions of the spools axial actuation mechanism to receive and providespools from the spools receptacle are identified in an exemplary seriesof steps 1380 to 1416.

Steps 1420 to 1436 of FIG. 42 are exemplifying an embodiment of theinvention directed to the transversal adjustment of the feeding module30 when the strip 74 moves laterally when unwinding from a wide spool.

A flow chart in FIG. 43 illustrating an embodiment related to the strip74 alignment is exemplified. If the strip 74 laterally moves furtherthan a predetermined threshold, sensed by sensors D, as best seen inFIG. 11, the strip feeding module 30 is laterally actuated to correctthe situation. Exemplary steps are identified between first step 1450 tothe last step 1506.

The flow chart illustrated in FIG. 44 includes a series of steps 1520 to1580 exemplifying a feeding of a new strip 74 in the feeding module 30of the balancing weight application apparatus 10. A back and forthmovement of the feeding toothed wheel 412 to properly engage the weights70 is described.

The embodiment of the balancing weight application apparatus 10 using atoothed drive wheel 412 and the tool 640 to feed the strip 74 could usethe following steps 1600 to 1636 from FIG. 45.

FIG. 46 relates to counting of the weights 70 and the blocking of thestrip 74 prior to cutting the strip 74 as illustrated in steps 1650 to1666. Blocking of the strip 74 is desirable to prevent risks ofinterference between the means for cutting the strip 74 and a weight 70.Any movement of the strip 74 is also prevented when the strip 74 cuttingoccurs.

Another exemplary strip 74 cutting and blocking sequence is illustratedin FIG. 47 with series of steps 1680 to 1712. A step can be addedbetween step 1662 and step 1666 to make the robot wait in positionbefore freeing the strip 74.

Strip 74 accumulation loops 378, 386 described above are managed to keepa predetermined loop range. Steps 1720 to 1736 of FIG. 48 and steps 1750to 1766 of FIG. 49 are exemplifying an embodiment of the invention.

While the invention has been described in connection with what ispresently considered to be the most practical and preferred embodiments,it is to be understood that the invention is not to be limited to thedisclosed embodiments and elements, but, to the contrary, is intended tocover various modifications, combinations of features, equivalentarrangements, and equivalent elements included within the spirit andscope of the appended claims. Furthermore, the dimensions of limiting,and the size of the components therein can vary from the size that maybe portrayed in the figures herein. Thus, it is intended that thepresent invention covers the modifications and variations of theinvention, provided they come within the scope of the appended claimsand their equivalents.

What is claimed is:
 1. A weights application tool for applyingwheel-balancing weights, the weights application tool comprising: a toolhub generally orthogonal to a tool axis thereof; a first weights holderof a semi-circular shape secured to the tool hub on a first radial sidethereof about the tool axis; and a second weights holder of asemi-circular shape secured to the tool hub on a second radial sidethereof about the tool axis.
 2. The weights application tool of claim 1,wherein the tool hub comprises a plurality of radially extendingportions for securing the weights holders thereon.
 3. The weightsapplication tool of claim 1, wherein the weights holders are axiallyoffset from each other.
 4. The weights application tool of claim 1,wherein the weights holders include are parallel to each other.
 5. Theweights application tool of claim 1, wherein the weights holders includenon-ferromagnetic material.
 6. The weights application tool of claim 1,wherein each of the weights holders comprises a leading side and atrailing side to collect a plurality of weights thereon aligned in apredetermined direction.
 7. The weights application tool of claim 1,wherein each of the weights holders comprises a pair of holder portions.8. The weights application tool of claim 7, wherein the pair of holderportions comprises an axial gap therebetween.
 9. The weights applicationtool of claim 7, wherein the pair of holder portions comprises a seriesof distanced ridges for locating each weight thereon.
 10. The weightsapplication tool of claim 7, wherein the holder portions comprisemagnet-receiving portions therein.
 11. The weights application tool ofclaim 10, wherein the magnet-receiving portions comprise radial openingstherein.
 12. The weights application tool of claim 10, wherein themagnet-receiving portions comprise magnets therein.
 13. The weightsapplication tool of claim 12, wherein a last weight-holder portioncomprises a magnet providing increased magnetic strength compared to theother magnets.
 14. The weights application tool of claim 10, wherein alast weight-holder portion comprises a lateral weight holder disposed oneach axial side thereof.
 15. The weights application tool of claim 1,wherein the tool includes three proximity sensors angularly disposed atabout 120-degree from each other.
 16. The weights application tool ofclaim 15, wherein the tool is adapted to collectively move the threeproximity sensors inside a center portion of the wheel for acquiringmeasurements of the center portion of the wheel.
 17. A weightsapplication tool kit for applying wheel-balancing weights, the weightapplication tool kit comprising: a tool hub generally orthogonal to atool axis thereof; a first non-ferromagnetic weights holder of asemi-circular shape for being secured to the tool hub on a first radialside thereof about the tool axis; and a second non-ferromagnetic weightsholder of a semi-circular shape for being secured to the tool hub on asecond radial side thereof about the tool axis.
 18. The weightsapplication tool kit of claim 17, further comprising a plurality ofmagnets for magnetically securing weights on the weight applicationtool.
 19. The weights application tool kit of claim 17, wherein each ofthe non-ferromagnetic weight holder comprises a pair of holder portions.20. A wheel-balancing weights application tool for applyingwheel-balancing weights to a central portion of a wheel, thewheel-balancing weights application tool comprising a pair of opposedsemi-circular weights holder capable of simultaneously carrying two setsof wheel-balancing weights to a wheel for sequentially securing the twosets of wheel-balancing weights to the central portion of the wheel.